/* 淡入 */

.u-fade-enter-active,
.u-fade-enter-to-active,
.u-fade-leave-active,
.u-fade-leave-to-active
{
    transition-property: all;
}

.u-fade-enter,
.u-fade-leave-to
{
    opacity: 0;
}

.u-fade-enter-to,
.u-fade-leave
{
    opacity: 1;
}